Rackwork
齿条, 齿条加工, 齿条机构
🗣️ 情景例句
It was destined to happen.
这是命中注定。
I had met Stone, too.
我也见过。
I can see you have put a lot of time into it.
我相信你在制定这个计划上一定花了不少精力吧。